Management of Sleep Apnoea Syndrome (SAS) in Patients With Vasovagal Syncope (VVS)

Inclusion Criteria: * Obstructive sleep apnoea syndrome (\>15 respiratory micro awakenings per hour of sleep) with an indication for treatment * Recurring vasovagal syncope episodes defined as follows: at least three vasovagal syncopes during the last two years - OR- symptoms of orthostatic intolerance occurring in the last 6 months (Symptoms are triggered by orthostatism and can include malaises without loss of consciousness, asthenia, dizziness, visual disturbances, tinnitus, palpitations, headache, limitations of physical activity) Exclusion Criteria: * Pathology that may explain syncope symptoms * Cardiopathy * Known disautonomia * Hypotension of known origin * Adrenal insufficiency * Thyroid disorder * History of sudden death in a first degree family member